Locating the Server ID (On-Premises Console)

Issue:   the AdminConsole hasn't been licensed yet, but the Server ID must be provided before the license is generated.

Solution:  Open AdminConsole to the Initialization page.   

e.g.  https://adminconsole.domain.ext/Initialization

https://pheecws.domain.ext/Initialization

Select Offline Activation ... above "Browse", there is an option to "Get One".   The resulting number is the Server ID.